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Bone Disorders01:29

Bone Disorders

3.4K
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
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Bone Remodeling01:40

Bone Remodeling

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Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
38.1K
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

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Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
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What is the Skeletal System?01:02

What is the Skeletal System?

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Overview
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Hormones and Bone Tissue01:17

Hormones and Bone Tissue

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The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
2.6K
Role of Vitamins in Maintaining Bone Health01:25

Role of Vitamins in Maintaining Bone Health

3.2K
The growth and maintenance of bone are regulated by a combination of nutritional factors, including vitamins, such as vitamin A, B12, C, D, and K.
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
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Related Experiment Video

Updated: Jun 6, 2025

Author Spotlight: Integrating Traditional Chinese Medicine with Modern Pharmacology and Genomics for Assessing Postmenopausal Osteoporosis in Mice
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Author Spotlight: Integrating Traditional Chinese Medicine with Modern Pharmacology and Genomics for Assessing Postmenopausal Osteoporosis in Mice

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[Osteoporosis].

Taku Saito1

  • 1Department of Orthopaedic Surgery, Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo.

No Shinkei Geka. Neurological Surgery
|December 2, 2024
PubMed
Summary
This summary is machine-generated.

Osteoporosis significantly elevates fracture risk, especially in patients with neurological disorders due to impaired balance and strength. Early risk assessment and tailored treatments are crucial for managing this prevalent bone disease.

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Area of Science:

  • Gerontology
  • Orthopedics
  • Neurology

Background:

  • Osteoporosis is the most common bone disease, increasing fracture susceptibility.
  • Multiple factors contribute to fracture risk, including lifestyle, genetics, and medication use.
  • Neurological disorders exacerbate risk through impaired balance and reduced muscle strength, leading to falls.

Purpose of the Study:

  • To highlight the multifaceted nature of osteoporosis and fracture risk.
  • To emphasize the increased vulnerability of patients with neurological conditions.
  • To underscore the importance of risk assessment and specialized treatment in osteoporosis management.

Main Methods:

  • Literature review of osteoporosis risk factors.
  • Analysis of the impact of neurological disorders on fall and fracture risk.
  • Discussion of current osteoporosis treatment strategies and physician responsibilities.

Main Results:

  • Fracture risk is influenced by a combination of personal history, lifestyle choices, genetics, and medication.
  • Reduced physical activity in neurological patients significantly heightens fall and fracture risks.
  • Effective, patient-tailored osteoporosis treatments are available.

Conclusions:

  • Physicians, including non-specialists like neurosurgeons, must assess osteoporosis and fracture risk.
  • Early identification and intervention are key to preventing fractures in at-risk populations.
  • Collaboration with specialists ensures optimal management of osteoporosis.